Rock-drill support



June 29 1926.. 1,590,239

G. H. GILMAN Rocx Drum SUPPORT Filed July lso, 1921 2 sheets-sheet 1 G.H.GLMAN Roux 'mumd SUPPORT Filed July 30, 1921 2 Sheets-Sheet 2 "l l u ww, m f n m 0 L Aw LQ 4 LLL Q w f q 1 m n Vurl w v In/vener:

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Patented `lune 29, 1926.

UNITED STATES GEORGE I-I. G ILMAN, OF BELMONT, MASSACHUSETTS.

BooK-DRILL SUPPORT.

Application sied July so, 1921. serial N0.`4ss,59s.

My invention relates to material working machines and particularly but not exclusively to those for drilling rock.

My invention will be best understood from the following description whe'n read in the light of the accompanying drawings showing a specific embodiment of my invention selected for illustrative purposes while the scope of my invention will be more particularly pointed out in the appended claims.

In the drawingsi- Y Fig. 1 is an elevation ofV a breast stoper and its mounting;

Fig. 2 is a section on the line 2 2 of Fig. 1; i y

Figs. 3 and. 4: are sections respectively on the lines 3 3 vand 4-1 of Fig. 2;

Fig. 5 is a section on the line 5-5 of Fig. 3; and y Y Fig. 6 is a section on the line 6-6 of Fig.

Referring to the drawings I have shownv a tool l and its actuator 3 and although these may be of any suitable type I have indicated the tool as a rock drill steel and its actuator as a fluid pressure operated hammer.' The actuator I secure to any suitable support herein exemplified as ythe mine column, arm 5. For mounting the actuator on the arm I have herein provided means for feedingk the actuator relatively to the rock and for moving it transversely to the direction of drilling of the tool, or in other words .with regard to this latterV motion, with the machine in the position illustrated by the drawings I have provided means for raising and lowering theY actuator.

As illustrated the feeding means for the actuator comprises a shell 7 which, as will be understood by those skilled in the art, affords guideways for receiving the guides 9 carried by the actuatorwhile for moving the guides along the guideways a feed screw or other appropriate means, not shown, may be provided. As the actuator and feeding mechanism do not form a part of my present invention the same will only be described with particularity sufficient to explain how they are applied to my present invention.

For securing the parts to the arm 5 I have shown a splitsleeve comprising the semi-cylindrical half-sections 11 and 13 which fit the exterior surface of the arm and which are adapted to be clamped there-V As illustrated integrally formed withthe half-section 13 and transversely thereto is a sleeve 15 having a cylindrical bore 17 in which 'is retained the exteriorly-cylindrical hollow post 19, the construction providing that the members 15 and 19 are telescopically arranged in such manner that the member 19 may bore 17.

The sleeve 15 is herein provided at its lower end as viewed in the drawings with a cover 21 attached to the sleeve by means of the bolts 23 and provided with a perforation 25 in which is rotatably mounted the shank 27Vof the screw 29. As illustrated the screw interiorly of the cover is provided with a thrust-collar 31 whichy rests on the interior surface of the cover and exteriorly of the cover the shank of the screw has keyed thereto a hand wheel 33. Interiorly of the sleeve I have shown on the screw a nut 35 prevented from rotating relatively to the sleeve by means of wings 37 slidably fitting ways 39 formed on opposite sides of the bore 17. As illustrated the screw extends upwardly into the hollow post which is provided with an interior annular rib 41 affording a shoulder resting on` the top surface of the nut.` The grooves 39 formed in the surface of the bore 17 as shown terminateV in shoulders 43, which serve as stops to limit the upward travel of the nut. As will be obvious, by turning the hand wheel 33 the screw 29.1nay be roboth slide andv rotate in the tated to cause the nut to move along the y f It will beobserved that the construction above described does not prevent the post from swivelling in the sleeve and that this swivelling permits the drill `steel to operate. in different directions. Herein for locking the post and the sleeve together the latter is cut away at an intermediate portion thereof to provide a recess 15 extending' for about half the circumference of the sleeve, which recess receives the clamping-member 47. At each side of one end of the recessI have shown the sleeve as provided with a pair of perforated ears 4.9 through which extends a bolt 51 providing a pivot for the clamping member L17.v At one end the clamping member is shown as provided with a perforated boss 53 and at its other end with a perforated boss 55, the perforation its actuator, of a mounting for supporting said actuator for longitudinal feeding movement, means providing a swivel for attaching said mounting at a point intermediate the travel of the actuator to a support, and means including a screw and nut for moving said mounting transversely to the travel of said actuator and permitting svvivelling Without eiiecting actuation by said -screW 10 and nut.

8. A rock drill, having in combination, a hammer drill having a removable drill steel,

a feed shell on Which said hammer drill is slidably mounted, a pair of telescoping members one of Which is attached to said feed shell and the other to a support, a nut splined to one member and supporting the other vmember, a rotatable non-longitudinally movable screw for moving said nut,

and means for clamping one member to the 20 other. Y

In testimony whereof, I have signed my name to this specification.

GEO. H. GILMAN. 

